Definitely you can still get wealthy trough Bitcoin. Cause price now very low and if you take advantage at this time and accumulate some Bitcoin for 2-4 years, then you will become a millionaire trough Bitcoin.
The thing is Bitcoin before is the only known crypto, others and many more exist after it gain popularity, by this time many who drops their bitcoin maybe see some other good coins, but If we think of it adaption of crypto weren't that wide yet and btc being lead can still give a possibility of getting wealthy.